John has made a substantial improvement in his health.

约翰的健康状况已有了相当大的改善。

There were a few who were making substantial improvements in their livelihood.

有一些人的生计正在取得实质性改善。

This is a substantial improvement over the showing of Mr Biden, who trailed by around three points when he ended his presidential campaign.

这比拜登的表现有了很大的改善，拜登在结束总统竞选时落后约三个百分点。

The only way we're going to make substantial improvements in health and health care is to make substantial improvements in the behavior of health and health care.

我们要在健康和保健方面取得实质性改进的唯一方法是在保健和保健行为方面做出实质性改进。

Now it's reasonable to expect and assume that we are going to see substantial improvements in energy efficiency of these technologies as we deploy them and learn to use them better.

现在可以合理地期望并假设，随着我们部署这些技术并学习更好地使用它们，我们将看到这些技术在能源效率方面的显着提高。